Chair base



July 16, 1929. c. TOMLINS CHAIR BASE Filed Oct. 19, 1926 Patented July 16, 1929.

UNITE CHAIR BASE.

Application filed October 19, 1926. Serial No. 142,743.

This invention relates to chair bases, and more particularly to a base adapted to support a school chair and provided with means whereby the chair may be moved to and from 5 the pupils desk to meet the various requlrements in connection with studying and getting into and out of the seat.

For certain purposes in connection with the pupils work, it is essential that the chair be arranged close to the desk and for other purposes that it may be moved away from the desk to a greater distance, and when the pupil is getting into or out of the chair it is desirable to have it removed a still greater distance from the desk.

In order to accomplish these objects it is necessary to provide a base which will move easily over the floor and yet not too easily and which, in its movements, will remain in a definite path.

The novel features of the invention will be apparent from the following description, taken in connection with the accompanying drawings, in which:

Figure l is a perspective view of a desk and the chair associated therewith, the latter be ing arranged on a base embodying my invenion;

Figure 2 is a bottom plan of the base shown in Fig. 1; and

Figure 8 is a section on the line 33 of Fig. 2. I

Referring to the drawings,.A indicates a school desk which may be of any preferred construction and B indicates a chair for the pupil, this chair being mounted on a base C.

The pedestal 10 of the chair is secured to a central portion 11 of the base C by means of suitable screws or other fastening devices 12.

40 Arranged on opposite sides of the central portion 11 of the base C are the parallel longitudinally extending members 13 and 14 to the underside of which, adjacent the ends of the members, are secured the plates 15 having pivoted thereto the cylindrical rollers 16.

Suitable recesses are provided in the underside of the members 13 and 14c for the rollers 16 and, in order to provide a retarding means for the purpose of preventing the base from moving too freely on the floor, I arrange friction pads 17 in two of these recesses, although these pads may be arranged in more or less than two of the recesses. The pads 17 bear against the upper side of the rollers 16 and, as will be readily understood, tend to retard the movement of the latter. I I

All of the rollers 16, as will be. seen from Figure 2, are arranged parallel and are of sufiicient length to cause the base to moveback and forth in the same path relative to the desk A. As will be seen from Figure 1, thebase is of neat appearance and will not interfere with the pupil in any way, and owing to the fact that it permits the chair to be moved to and from the desk, it will be of great convenience to the pupil. It will also be observed that the base is practically square and .will form a very stable support for the chair.

The desk may, when desired, be'mounted on the base members 18, these members being preferably spacedapart a suilic'ient distance to permit the chair base C to move between them and be thereby held so as to maintain the back of the chair in proper relation to, the desk. In practice the base members 18 are spaced apart a distance about one-half inch greater than the width of the base C.v

It will be obvious to those skilled in the art that changes may be made in the various details of my invention, and that my improvements may be embodied in thechair structure instead of a separate base to which the chair is secured, without departing from the spirit of the invention as defined in the claim, and therefore I do not wish to be limited to the exact details shown and described. 7

Having thus described my invention, what I claim is: I

A chair base provided with a plurality of recesses therein, a plurality of rollers, one

mounted in each of said recesses, and constrained to 'movement about parallel fixed axes, and friction pads'mounted in the recesses between the base and the rollers to retard movement of the latter. In testimony whereof I hereunto afiixmy signature. CHRISTINE TOMLINS. 

